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Variety of technological trajectories in low emission vehicles (LEVs): a patent data analysis

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Author Info

  • Vanessa OLTRA (E3i-IFReDE-GRES)
  • Maïder SAINT-JEAN (E3i-IFReDE-GRES)

Abstract

This paper focuses on the diversity of engine technologies for Low Emission Vehicles (LEVs) that are developed by car manufacturers in order to substitute for the conventional internal combustion engine vehicle. Our purpose is to analyse the competition between the various technologies for LEVs as well as the innovative strategy of car manufacturers. We first propose to define and to represent these technological trajectories in order to compare their performances and to identify their strength and weaknesses. The technological bottlenecks, the barriers to the adoption of these alternative engine technologies as well as the features of this technological competition are underlined. We then use a patent data analysis to study the patent portfolios of the main car manufacturers in these technologies on the period from 1990 to 2005. The dynamics of patents applied by car manufacturers gives insight on the competition among technologies and on the strategy of firms. This analysis emphasises the progressive diversification of firms patent portfolios over the whole set of engine technologies and the differentiated strategic positioning of car manufacturers according to countries.

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Bibliographic Info

Paper provided by Groupement de Recherches Economiques et Sociales in its series Cahiers du GRES with number 2006-20.

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Date of creation: 2006
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Handle: RePEc:grs:wpegrs:2006-20

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Web page: http://gres.u-bordeaux4.fr/
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Related research

Keywords: Low emission vehicles; environmental innovation; technological competition; patent data;

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References

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  1. Zvi Griliches, 1990. "Patent Statistics as Economic Indicators: A Survey," NBER Working Papers 3301, National Bureau of Economic Research, Inc.
  2. Brunnermeier, Smita B. & Cohen, Mark A., 2003. "Determinants of environmental innovation in US manufacturing industries," Journal of Environmental Economics and Management, Elsevier, vol. 45(2), pages 278-293, March.
  3. Vanessa Oltra & Maider Saint Jean, 2005. "The dynamics of environmental innovations: three stylised trajectories of clean technology," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 14(3), pages 189-212.
  4. Lanjouw, Jean Olson & Mody, Ashoka, 1996. "Innovation and the international diffusion of environmentally responsive technology," Research Policy, Elsevier, vol. 25(4), pages 549-571, June.
  5. repec:fth:harver:1473 is not listed on IDEAS
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Cited by:
  1. Vanessa OLTRA (GREThA-GRES) & Maïder SAINT JEAN (GREThA-GRES), 2007. "Incrementalism of environmental innovations versus paradigmatic change: A comparative study of the automotive and chemical industries," Cahiers du GRES 2007-19, Groupement de Recherches Economiques et Sociales.
  2. G. Marletto, 2013. "Car and the city: Socio-technical pathways to 2030," Working Paper CRENoS 201306, Centre for North South Economic Research, University of Cagliari and Sassari, Sardinia.
  3. van der Vooren & Eric Brouillat, 2013. "Evaluating CO2 reduction policy portfolios in the automotive sector," Innovation Studies Utrecht (ISU) working paper series 13-01, Utrecht University, Department of Innovation Studies, revised Feb 2013.
  4. Sjoerd Bakker, 2009. "The car industry and the blow-out of the hydrogen hype," Innovation Studies Utrecht (ISU) working paper series 09-14, Utrecht University, Department of Innovation Studies, revised Oct 2009.
  5. Sjoerd Bakker, 2009. "The Emergence of a Dominant Design – a study on hydrogen prototypes," Innovation Studies Utrecht (ISU) working paper series 09-15, Utrecht University, Department of Innovation Studies, revised Nov 2009.
  6. Vanessa OLTRA (GREThA UMR CNRS 5113) & René KEMP (University of Maastrich) & Frans P. de VRIES (University of Stirling), 2009. "Patents as a Measure for Eco-Innovation," Cahiers du GREThA 2009-05, Groupe de Recherche en Economie Théorique et Appliquée.

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  1. Studies on the automobile industry

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